2024 Physics Midterm

Front

What happens to your weight if Earth's mass is cut in half?

Back

Your weight decreases because gravitational force decreases.

Front

At what time does an object stop moving if it is in motion for 3.5 seconds?

Back

The object stops moving at 3.5 seconds.

Front

How do you find the horizontal and vertical components of velocity for a projectile launched at an angle?

Back

For a cannonball launched at 60 degrees with an initial velocity of 6 m/s, the components are: v_x = 3 m/s and v_y = 5.2 m/s.

Front

What is the unit of measurement for work in physics?

Back

Work is measured in Joules.

Front

Which of Newton's Laws states that an object in motion stays in motion unless acted upon by an external force?

Back

This is Newton's 1st Law of Motion.

Front

What is gravitational force?

Back

Gravitational force is the attraction between two masses, which decreases as the distance between them increases.

Front

How do you calculate the work done on an object?

Back

Work is calculated as the product of force and displacement in the direction of the force: Work = Force x Distance.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) is calculated using the formula: KE = 1/2 mv^2, where m is mass and v is velocity.

Front

What is the principle of conservation of energy?

Back

The principle states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity representing how fast an object moves, while velocity is a vector quantity that includes direction.